This study examines how YieldCo&rsquo;s fit within a socially responsible investment strategy and tests the validity of a long YieldCo, short parent sponsor hedge strategy. Three tests were utilized: first, YieldCo&rsquo;s were compared to their parent sponsor using cumulative historical (dividend-reinvested) returns. Second, the daily returns Yieldco&rsquo;s were compared to the daily returns of three major SRI indicies in order to derive abnormal returns. Finally, a hedge strategy involving going long a YieldCo and shorting its respective parent sponsor. On average, each YieldCo outperformed its parent by 23% from the date of IPO (31% annualized). YieldCos have outperformed the three major sustainabilty indicies. Additionally, on average, the hedged YieldCo strategy generated a positive alpha of 0.128% above the S&amp;P 500 and a historical beta of (0.525) with a below 0.05 level of significant (p value). The implications of using YieldCos as socially responsible investments is discussed.&nbsp;